protobuf---messge嵌套get set

package test_namespace;message ChildMsg {optional string child = 1;
}message FatherMsg {optional string father = 1;    optional ChildMsg child_msg = 2;
}

 

或者

message FatherMsg {optional string father = 1;    message ChildMsg {optional string child = 1;}optional ChildMsg child_msg = 2;
}

 

上述两种生成的test.pb.h不同, 但get set一样

 

#include <stdio.h>
#include <iostream>
#include <string>#include "test.pb.h"using namespace std;int main()
{test_namespace::FatherMsg father_msg;father_msg.set_father("fathermsg");    father_msg.mutable_child_msg()->set_child("childmsg");cout << father_msg.has_father() << endl;cout << father_msg.has_child_msg() << endl;cout << father_msg.child_msg().has_child() << endl;cout << father_msg.father() << endl; cout << father_msg.child_msg().child() << endl;return 0;
}